feat: add chatwoot instance status in superadmin (#6045)

* feat: add chatwoot instance status in superadmin

* feat: add redis metrics to instance health page

* chore: fix rubocop

* chore: rescue redis no connection

* chore: add rspec

* chore: refactor

* feat: add instance health to /api

* chore: rescue postgres

* chore: fix spec

app/controllers/api_controller.rb

@@ -2,6 +2,24 @@ class ApiController < ApplicationController
   skip_before_action :set_current_user, only: [:index]
 
   def index
-    render json: { version: Chatwoot.config[:version], timestamp: Time.now.utc.to_formatted_s(:db) }
+    render json: { version: Chatwoot.config[:version],
+                   timestamp: Time.now.utc.to_formatted_s(:db),
+                   queue_services: redis_status,
+                   data_services: postgres_status }
+  end
+
+  private
+
+  def redis_status
+    r = Redis.new(Redis::Config.app)
+    return 'ok' if r.ping
+  rescue Redis::CannotConnectError
+    'failing'
+  end
+
+  def postgres_status
+    ActiveRecord::Base.connection.active? ? 'ok' : 'failing'
+  rescue ActiveRecord::ConnectionNotEstablished
+    'failing'
   end
 end

app/controllers/super_admin/instance_statuses_controller.rb

@@ -0,0 +1,44 @@
+class SuperAdmin::InstanceStatusesController < SuperAdmin::ApplicationController
+  def show
+    @metrics = {}
+    chatwoot_version
+    sha
+    postgres_status
+    redis_metrics
+  end
+
+  def chatwoot_version
+    @metrics['Chatwoot version'] = Chatwoot.config[:version]
+  end
+
+  def sha
+    sha = `git rev-parse HEAD`
+    @metrics['Git SHA'] = sha.presence || 'n/a'
+  end
+
+  def postgres_status
+    @metrics['Postgres alive'] = if ActiveRecord::Base.connection.active?
+                                   'true'
+                                 else
+                                   'false'
+                                 end
+  end
+
+  def redis_metrics
+    r = Redis.new(Redis::Config.app)
+    if r.ping == 'PONG'
+      redis_server = r.info
+      @metrics['Redis alive'] = 'false'
+      @metrics['Redis version'] = redis_server['redis_version']
+      @metrics['Redis number of connected clients'] = redis_server['connected_clients']
+      @metrics["Redis 'maxclients' setting"] = redis_server['maxclients']
+      @metrics['Redis memory used'] = redis_server['used_memory_human']
+      @metrics['Redis memory peak'] = redis_server['used_memory_peak_human']
+      @metrics['Redis total memory available'] = redis_server['total_system_memory_human']
+      @metrics["Redis 'maxmemory' setting"] = redis_server['maxmemory']
+      @metrics["Redis 'maxmemory_policy' setting"] = redis_server['maxmemory_policy']
+    end
+  rescue Redis::CannotConnectError
+    @metrics['Redis alive'] = false
+  end
+end

app/views/super_admin/application/_navigation.html.erb

@@ -40,7 +40,7 @@ as defined by the routes in the `admin/` namespace
     </li>
 
     <% Administrate::Namespace.new(namespace).resources.each do |resource| %>
-      <% next if ["account_users", "dashboard", "devise/sessions", "app_configs" ].include?  resource.resource %>
+      <% next if ["account_users", "dashboard", "devise/sessions", "app_configs", "instance_statuses" ].include?  resource.resource %>
       <li class="navigation__link navigation__link--<%= nav_link_state(resource) %>">
         <i class="<%= sidebar_icons[resource.resource.to_sym] %>"></i>
         <%= link_to(
@@ -50,6 +50,11 @@ as defined by the routes in the `admin/` namespace
       </li>
     <% end %>
 
+  <li class="navigation__link">
+      <i class="ion ion-medkit"></i>
+      <%= link_to "Instance Health", super_admin_instance_status_url %>
+    </li>
+
     <li class="navigation__link">
       <i class="ion ion ion-network"></i>
       <%= link_to "Sidekiq", sidekiq_web_url, { target: "_blank" } %>

app/views/super_admin/instance_statuses/show.html.erb

@@ -0,0 +1,23 @@
+<% content_for(:title) do %>
+  Instance Health
+<% end %>
+<header class="main-content__header" role="banner">
+  <h1 class="main-content__page-title" id="page-title">
+    <%= content_for(:title) %>
+  </h1>
+</header>
+<section class="main-content__body">
+  <table>
+  <tr>
+    <th>Metric</th>
+    <th>Value</th>
+  </tr>
+  <% @metrics.each do |key,value| %>
+   <tr>
+   <td> <%= key %> </td>
+   <td> <%= value %> </td>
+  </tr>
+  <% end %>
+</table>
+
+</section>